A modern electricity grid powered by diverse renewable energy and storage can provide secure, clean and affordable power for Australians. The Powering a 21st Century Economy report find that the inevitable closure of ageing, inefficient, polluting coal plants provides a critical opportunity to move to a modern 21st century electricity system. In doing so, Australia will tackle multiple policy objectives: affordable electricity for consumers; a secure and reliable electricity system; safeguarding our electricity system from worsening extreme weather; and tackling climate change by reducing Australia’s pollution.